Pressure conversion

Convert Torr to Standard atmosphere

1 torr (Torr) equals 0.001315789474 standard atmosphere (atm). Enter any value below to convert from Torr to atm.

Enter a value and choose units. Results update instantly.

1 Torr = 0.0013157895 atm

All Pressure units

From 1 Torr
UnitValue
Pascal Pa 133.3223684211
Kilopascal kPa 0.1333223684
Megapascal MPa 0.0001333224
Bar bar 0.0013332237
Millibar mbar 1.3332236842
Standard atmosphere atm 0.0013157895
Pound per square inch psi 0.0193367747
Torr Torr 1
Millimeter of mercury mmHg 0.9999998575
Inch of mercury inHg 0.0393700689
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Formula

Torr to atm conversion formula

Use this relationship for a direct conversion:

atm = Torr x 0.001315789474

Worked example

2 Torr = 0.0026315789 atm.

Conventional mercury-column units are not measurements adjusted for local temperature or gravity.

Quick reference

Torr to Standard atmosphere table

Torr (Torr)Standard atmosphere (atm)
0.010.0000131579
0.10.0001315789
10.0013157895
20.0026315789
50.0065789474
100.0131578947
250.0328947368
500.0657894737
1000.1315789474
1,0001.3157894737

From unit

About the torr

Exactly one 760th of a standard atmosphere.

Symbol: Torr

To unit

About the standard atmosphere

Exactly 101,325 pascals.

Symbol: atm

Keep converting

Related conversions

Standard atmosphere to TorrReverse this conversion Torr to PascalTorr to PaTorr to KilopascalTorr to kPaTorr to MegapascalTorr to MPaTorr to BarTorr to barTorr to MillibarTorr to mbarTorr to Pound per square inchTorr to psi

Source

Conversion standard

Definitions are checked against NIST SP 811: Pressure units. Calculations use full internal precision before display rounding.

View the complete pressure converter

Questions

Torr to atm FAQ

How do you convert torr to standard atmosphere?

Use the formula atm = Torr x 0.001315789474. 1 torr (Torr) equals 0.001315789474 standard atmosphere (atm).

Is the Torr to atm conversion exact?

Both unit definitions use exact factors. Only the displayed decimal may be rounded.